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ICSE Class 8 Answered

Factorise : 49x^4+9y^2-49z^2-42x^2y  
Asked by Cl_narayan | 09 Jan, 2020, 01:22: PM
answered-by-expert Expert Answer
To factorise: 49x4+9y2-49z2-42x2y

49 x to the power of 4 plus 9 y squared minus 49 z squared minus 42 x squared y equals open parentheses 7 x squared close parentheses squared plus open parentheses 3 y close parentheses squared minus open parentheses 7 z close parentheses squared minus 2 open parentheses 7 x squared close parentheses open parentheses 3 y close parentheses equals open parentheses 7 x squared close parentheses squared plus open parentheses 3 y close parentheses squared minus 2 open parentheses 7 x squared close parentheses open parentheses 3 y close parentheses minus open parentheses 7 z close parentheses squared equals open parentheses 7 x squared minus 3 y close parentheses squared minus open parentheses 7 z close parentheses squared equals open parentheses 7 x squared minus 3 y minus 7 z close parentheses open parentheses 7 x squared minus 3 y plus 7 z close parentheses
Answered by Renu Varma | 10 Jan, 2020, 10:11: AM

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